fox 5's bob barnard has more. >> reporter: this was a noon time march on the capitol hill offices of the national rifle association, about 100 people taking part. >> obviously it was just the amazing horror of 20 little children. i mean that was my motivation. this is my first time going to an anti-gun rally. it will not be my last. >> we're here urge nra lobbyists to step down. >> reporter: the demonstrators confronted by one man with an opposing view. >> this principal in the school tried to defend the children and was killed for it, but if the principal tried to defend the children with a gun, perhaps, you know, they could have saved many lives. >> reporter: rally organizers encouraged by president obama's remarks in newtown sunday night. >> are we really prepared to say that we're powerless in the face of such carnage? that the politics are too hard? are we prepared to say that such violence visited on our children year after year after year is somehow the price of our freedom? >> reporter: white house officials acknowledging today changing the nation's gun laws is complicated bu